Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 13 of 13
  1. #1
    Join Date
    Jan 2009
    Location
    Australia
    Posts
    1,223

    Default Woodcut end grain hollowing tool

    I have had one of these tools (Cobra is the name I think) for many years.
    Have used it to good effect on green timber bowls etc.
    It has not had any use for a long time (new job, moved interstate and a few other excuses!).
    Went to use it and the tip was broken. New replacement sent very smartly by Woodcut in NZ, thank you very much.

    Now I either have lost my touch/technique or it is the dry timber I'm using as I can't seem to get it to cut. I'm just getting powder....

    I can't find any tips etc on the internet.

    So if someone has one could you perhaps help me out on how to get back into the great swathes of shavings I used to get????

    Thanks
    Lyle.

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Join Date
    Oct 2007
    Location
    Horsham Victoria
    Posts
    901

    Default

    Two things spring to mind:
    1/ Is the cutting edge sharp? If not or in doubt get a diamond paddle and sharpen it. Do not sharpen on a bench grinder
    2/ Is the regulator/governor/depth of cut gauge open enough? Perhaps you need to open it up a bit and then test. Testing it is best done an open bowl. Rotate the tool A/C wise so that the brass governor is initially rubbing on the wood and then rotate the tool C/wise until it starts to cut. If it is grabby then close the gap a bit.

  4. #3
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    +1 to Brendan's post. If it's a forerunner of the Proforme. Pic below.

    If that's so, also hard use can bend the cap and partially close the gap with the cutter. If the cap is brass as on the Proforme it can be removed and gently straightened in a vice, and the bottom edge facing the cutter side carefully filed flat if necessary.

    But usually dust=blunt or not enough gap (and some woods -> dust regardless).
    Cheers, Ern

  5. #4
    Join Date
    May 1999
    Location
    Grovedale, Victoria Australia
    Age
    66
    Posts
    3,906

    Default Shepid loop cutter

    The Shepid loop cutter does need some fettling with a diamond file when you get them.

    You can see the markings on the cutter that need to be cleaned up to give a cleaner cutting edge.

    As the others have said once cleaned up setting the overhead gauge is the next part that is critical and this is a lot of trial and error, but opening it a little bit at a time to find what works best for you.

    Practice on green timber till you find the flow.
    Jim Carroll
    One Good Turn Deserves Another. CWS, Vicmarc, Robert Sorby, Woodcut, Tormek, Woodfast
    Are you a registered member? Why not? click here to register. It's free and only takes 37 seconds!

  6. #5
    Join Date
    Jan 2009
    Location
    Australia
    Posts
    1,223

    Default

    OK, thanks for the info.
    The replacement cutter I just stuck in and got stuck into the job.
    Not sharp from manufacture?? I'll give it a touch up with my diamond paddle.
    Also I'll try the gap adjustment too.
    And I'll check the guide for flatness.

    I'll let you know how I go.

    Thanks for the input. I had used this successfully some years ago, but just can't get it working. Maybe I'm too impatient.

    Lyle.

  7. #6
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    You're entitled to be impatient ;-)

    Also play around with tool presentation as suggested. These designs usually have a sweet spot.
    Cheers, Ern

  8. #7
    Join Date
    Jan 2009
    Location
    Australia
    Posts
    1,223

    Default

    I'm not getting the long curlies I used to. But that was in green timber. I'm using dry camphour laurel into end grain.
    I haven't found that sweet spot yet. I'll keep trying.
    Lyle.

  9. #8
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    End-grain won't give you long curlies with dry timber. If your end-grain shavings show tight corrugations and are short in length you're on the money. Fluffy shavings means open the gap a bit unless it's a finishing cut.

    Gap setting is particular; a tiny change has a big effect.
    Cheers, Ern

  10. #9
    Join Date
    Jan 2009
    Location
    Australia
    Posts
    1,223

    Default

    Ahhhh.... I understand the corrugations. I get them every now and then.
    I must concentrate now to look for them and remember what the tool was doing at that point. Then repeat!
    Thanks mate.

  11. #10
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    Goodo.

    And wot Brendan said. If you think of this tool as a bowl gouge but with the bevel on top ... start your cut with the tip dropped a bit and rotated a bit anticlockwise. Contact with the cap and then raise and rotate the tip clockwise til you feel the cut start to happen.

    And one thing will throw all this out. That's if your cuts have produced a spiral or out of true surface. Happens quickly enough cos the cap (or bevel, your guiding surface) follows and then exaggerates prior deviations. If that's happened you have to take the cap out of the game for the moment. At a minimum, start back closer to the rim or the centre, maybe open the gap a bit, contact with the cutting edge only and re-establish a true line just by your muscle strength and fine coordination. Make sense?
    Cheers, Ern

  12. #11
    Join Date
    Jan 2009
    Location
    Australia
    Posts
    1,223

    Default

    Thanks Ern.
    I have an early mark from work this arvo, so I might be able to get into the shed and give it another try.
    Lyle.

  13. #12
    Join Date
    Sep 2005
    Location
    melbourne SEAFORD
    Age
    61
    Posts
    723

    Default

    I also find that you have to rotate the tool to the left a little bit until it starts to cut . It can be a little frustrating if you haven't used it for a while .
    insanity is a state of mind if you don't mind it does not matter.

  14. #13
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    Agree with Rodent. A bit of anticlockwise on the shaft gives you more of a shearing cut; cuts cleaner and the edge lasts a bit longer.

    End grain is hard on these kind of edges and a regular lick with a diamond paddle keeps it keen. But you get to a point where the rounded over edge needs more than a lick.
    Cheers, Ern

Similar Threads

  1. bct hollowing tool
    By eisbaer in forum WOODTURNING - GENERAL
    Replies: 5
    Last Post: 19th May 2009, 03:31 PM
  2. Woodcut Shepid/Mighty Midget hollowing tool
    By Mulgabill in forum WOODTURNING - GENERAL
    Replies: 9
    Last Post: 31st May 2008, 08:24 PM
  3. Am I doing this right - hollowing tool
    By Arron in forum WOODTURNING - GENERAL
    Replies: 13
    Last Post: 27th May 2008, 07:45 PM
  4. Hollowing tool
    By Fredo in forum WOODTURNING - GENERAL
    Replies: 5
    Last Post: 23rd April 2008, 10:35 PM
  5. Favorite Tool for End Grain Hollowing?
    By Marshall Gorrow in forum WOODTURNING - GENERAL
    Replies: 8
    Last Post: 12th June 1999, 02:32 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •